Environmental Geography Seminar Jan. 16

Dear all,

Hello!

This is an announcement of the upcoming Environmental Geography Seminar.

Please see all the details carefully below.

【Date】 16th. January. Wed. （Time: 15:00~）

【Place】 D101

【Content】

1. Presenters

i. Liu Weiqi
A study progress report
Title: Roles of action project for local communities: Lessons from field survey on the different cognition of the Imja Glacial Lake Project between local people and project-related people.

ii. Shi Muqing
A study progress report
Title: Estimation of freshwater discharge from the Kamchatka Peninsula to its surrounding oceans.

iii. Sugita
A study progress report
Title: Marine Litter in Shiretoko Peninsula

iv. Ding Manhui
A paper review (redoing)
Title: Temporal and spatial variability of annual extreme water level in the Pearl River Delta region, China
Authors: Wei Zhang , Yixin Yan, Jinhai Zheng, Ling Li, Xue Dong, Huijuan Cai
Journal：Global and Planetary Change 69 (2009) 35–47
Abstract: This paper is concerned with identifying the spatial and temporal patterns in the annual maximum and
minimum water level in the Pearl River Delta (PRD) region. The Mann–Kendall test and Pettitt test are used
to detect trends and abrupt change points, and the Trend Free Pre-Whitening (TFPW) approach then
eliminates the effect of serial correlation in data series with significant autocorrelation. Approximately fifty
years of the annual hydrological variables from 18 stations in the three major rivers (the West River, the
North River, and the East River) are examined. The changing trends of the extremes in water level show
different features in different parts of the PRD region. Generally speaking, in the upper part of the delta, the
water levels show a decreasing trend while in the middle and lower part there is an increasing trend. This
spatial pattern of the extreme water level variation is unlikely to be due to a long-term change in stream flow
in the PRD region because the water level changes do not always coincide with the extreme stream flow
variations. Sand excavation initiated in the 1980s and continuing for more than 20 years in almost all
tributaries around the PRD region is one of the most serious intensive human activities affecting water levels.
The result of the Pettitt test indicates that most abrupt change points occurred in 1980s–1990s, which
reveals that sand excavation and channel regulation are likely to have been the most significant factors
contributing to the change over this period. These anthropogenic activities modify the annual extreme water
level dramatically in a way that affects the morphology of river channels and estuaries of the PRD and also
the redistribution of discharge. However, there are differences in the geographic locations of significant
trends for the water level investigated, which implies that these impacts are not spatially uniform.

2. Note this:

Please send me the detailed information about your presentation at least 5 days before your turn.

For a paper review: title and author of the paper, journal name, which volume, pages, also the link (if possible) should be provided.

If a paper written in Japanese is going to be presented, please kindly send me the information both in Japanese and English.

【Notice】

※ In case you are absent from the seminar or late for the seminar, please contact Professors or me in advance. Any absence without permission is not allowed;

※ Please be punctual (very important);

※ Please do your full preparation for the seminar;

※ Your active participation is always appreciated;

※ Please feel free to get in touch with me if you have any questions or comments.

Best Regards,

Chang Liang